I am unable to build current HEAD. I'm getting a build error in Outputable
module:
compiler/utils/Outputable.hs:1046:28:
Not in scope: type constructor or class ‘CallStack’
compiler/utils/Outputable.hs:1047:23: Not in scope: ‘showCallStack’
The most likely culprit is 80d7ce8038a100f6797a89755c893c6f67f18a30, which
added this:
#if __GLASGOW_HASKELL__ >= 710
pprSTrace :: (?location :: CallStack) => SDoc -> a -> a
pprSTrace = pprTrace (showCallStack ?location)
#else
pprSTrace :: SDoc -> a -> a
pprSTrace = pprTrace "no callstack info"
#endif
The most interesting thing is that if I change the definition of pprSTrace in
the first branch of
#if to be identical to the definition in the second branch, then I get warnings
that GHC.Stack
and GHC.Exception imports are redundant. Any ideas what might be going on here?
I'm compiling
using GHC 7.10.1. This happens in a clean build tree.
Janek
---
Politechnika Łódzka
Lodz University of Technology
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